Pulverizer.



W. GRUENDLER.

PULVERIZER. APPLICATION FILED MAR. 9, 1908.

Patented Mar. 30, 1909.

JA/Vf/V Tofa WILLIAMGRUENDLER, OF ST. LOUIS, MISSOURI.

PULVERIZER.

Specification of Letters Patent.

Patented March 30, 1909.

Application filed March 9, 1908. Serial No. 420,034.

To all whom it may concern:

Be it known that I, WILLIAM GRUENDLER, a citizen of the United States, residing at St.

,Louis, and State of Missouri, have invented a new and useful Improvement in Pulverizers, of which the following is a specificat1on.

My invention relates to improvements in pulverizers in which rotating swinging hammer bars operate in conjunction with sizing bars held in position by means of grooves provided in sides of pulverizers; and the objects of my improvements are, first, to provide annular grooves in the sides of pulverizer to receive the ends of sizing bars; second, to afford facilities for easy access to sizing bars on exterior of machine by providing removable plates; third, to prevent the pulverizcd material in machine from escaping around shaft openings in the sides of m achinc, byproviding a dust tight con trivance; fourth, to obtain greater pulverizing'ctliciency in the machine by providing bai'llcr bars or plates; fifth, by providing a sizing bar that can be readily made and easily adjusted for any degree of pulverizing desired. l attain these objects by the mechanism illustrated in the-accompanying drawing, in which- Figure l, is a vertical longitudimil section of the machine; Fig. .2, a vertical transverse section of the machine; Fig. I}, a vertical side elevation of machine with part shown in sec- I tion; Fig. 4, a detailed view in perspective of the sizing bar; Fig. 5, a detailed view in perspective of the batilcr bar.

Similar letters refer to similar parts throughout the several views.

The upper part B, with the lower part C, and the hopper spout ll), constitute the frame of thernachine A. The shaft G, is held in position, and rotates in, the adjustable journal boxes The journal boxes are in turn held in place by the frames i adjusting screws J, being provided in same for the adjusting of journal boxes." The journal frames are supported by brackets provided on sides of inachine to which they are secured by bolts; A ribbed spider I, is pfovided and'secured rigidly to v shaft G, to which areloosely bolted the pivoted hammers or boaters H. Annular grooves P, are provided in sides of machine extending in a semi-circle, downwardly from the horizontal center line of shaft on one side of same, to a similar height on the other side as shown. The grooves are made of a suitable width and depth to pcrinit of easy sliding-in of the sizing bars K. On the exterior of machine and covering these grooves, removable plates Q are provided,

constructed as shown in Fig. it, being made of one piece of straight metal with ends a and d, bent as shown, a center line passing through facesu, and d of ends would intcrsect at right angles a center line passing through faces I) and 0. Faces c and (1 of ends of bar are of similar width, but of different lengths as may be desired. lface c is of an ecpral width to faces a and d tapering gradual y down to any desired width at face I). This sizing bar can be made of any metal desired.

- Secured to the interimside of upper part B of machine, are the batller bars 11,. as shown in Fig. l, and in detail inl ig. .5. They are held in any position desired by bolts 0 parallel to center line of shaft G. The teethf of bars are placed in a staggered position in machine, so that the center line of tooth f on every alternate bar would be in line with the center line of the space between teeth], on the bar immediately preceding' and following it. The object of this is to offer more obstruction to the passage of ma tcrial being pulverized and thereby increase the efficiency of machine. ,The bars can be made of any metal desired In Fig. 3 lnrl'llerplates S are shown. These plates are removable and held in place on interior of upper part B of machine by bolts T as shown. T 1e plates have holes I\ extending through and at right angles to the interior face of same. Holes can be of any size or distance apart desired, and plates can be of any width. The object of tlicsc batllcr dates is similar to the balllcr bars, and can be used for material requiring less hammer ing to be pulverized, than would be required where the bafiler bars are used.

To secure a dust tight contrivance around the shaft holes on the exterior sides of putvcrizer I provide the following arrangement; A rib U, circular in shape and of a desired height, is provided on the outside of '1na chine at an equal radius all around from cen ter line of shaft G, thoside of this rib next to shaft G is beveled as shown A rib is prov'ided on a circular plate M that engages snugly on the bevclcdsido of rib U as shown, the plate M being held in place and made adjustable by the bolts N. The space W between plate M- and side of machine is filled With a suitable packing, which is pressed tightly around shaft G by the adjusting of plate M,-thereby preventing any escape of ulverized materi from interior of machine y Way of the shaft holes.

I am aware that prior to my invention,

pulverizers havebeen made with rotating swingin hammers in conjunction with sizing bars.

therefore do not claim sucha combination broadly; but A I claim:

1.111 a pulverizer, a frame,

annular grooves in the sides of the frame, removable plates on the exterior of the frame covering said grooves, sizing bars having their ends secured in the grooves and pivoted hammers or beaters rotatable Within said frame and coacting with said bars.

n a pulverizer, a frame, integralibafj fler bars secured within and. t0 the up er portion of said frame, said baffier barshavmg a rectangular body portion and dlamon shaped projections or teeth extending down Wardly therefrom to coaot with hammers or v 

